Early this year I got another bike that has a 135 mm front fork and a very large front tire. I modified my existing bike mount to hold the new bike, yet be able to hold the old bike when needed. I made a new dummy axle that fits in the 20 mm mount and is held in place by 2 bolts. The fat front tire got a new dummy fork to hold it. I try to make everything so I can modify it or move it as is necessary.